English

Interdependence between integrable cosmological models with minimal and non-minimal coupling

General Relativity and Quantum Cosmology 2015-12-15 v2 Cosmology and Nongalactic Astrophysics High Energy Physics - Theory

Abstract

We consider the relation between exact solutions of cosmological models having minimally and non-minimally coupled scalar fields. This is done for a particular class of solvable models which, in the Einstein frame, have potentials depending on hyperbolic functions and in the Jordan frame, where the non-minimal coupling is conformal, possess a relatively simple dynamics. We show that a particular model in this class can be generalized to the cases of closed and open Friedmann universes and still exhibits a simple dynamics. Further we illustrate the conditions for the existences of bounces in some sub-classes of the set of integrable models we have considered.

Keywords

Cite

@article{arxiv.1509.00590,
  title  = {Interdependence between integrable cosmological models with minimal and non-minimal coupling},
  author = {A. Yu. Kamenshchik and E. O. Pozdeeva and A. Tronconi and G. Venturi and S. Yu. Vernov},
  journal= {arXiv preprint arXiv:1509.00590},
  year   = {2015}
}

Comments

15 pages, v2: figures and references added, accepted for publication in CQG

R2 v1 2026-06-22T10:47:12.294Z